Closure for containers



June 23, 1953 FIG, 2

J. c. DE SHAZOR, JR 2, 42,911

CLOSURE FOR CONTAINERS Filed June 20, 1949 /4 wit g1154 2 1 1 1 2 2 2 1 1 1 2 2 1 44 I IN V EN TOR.

JAMES C. DE SHAZOR JR.

A T TORNEY Patented June 23, 1953 UNITED A STATES PATENT @FFIUS CLOSURE FOR CONTAINERS James Clifton De Shazor, Jr., Portland, Oreg. Application June 20, 1949, Serial No. 100,160

2 Claims.

Fig. 1 is a fragmentary section through the assembled parts.

Fig. 2 is a fragmentary section through the rim of the shell.

Fig. 3 is an elevation partially in section showing the closure and the heating rim.

Fig. 4 is a bottom view of Fig. 3. 7 Like numbers of reference refer to the same or similar parts throughout the several views.

Referring in detail to the drawing, there is shown the lower portion 10 of a container 1 I. The portion is somewhat enlargedand provided with a counter-bore l2 having the shoulder 13, against which is to be placed a closing disk or bottom It.

ternal groove and the disk i4 is provided with an external groove 16, into which is snapped a metallic ring H.

The material in the container I l is sufficiently elastic to permit the bottom 14 with its ring I! to be forced into place as shown in Fig. 1.

It is desirable to chamfer the face 18 to assist in assembling the parts. It is desirable to employ a plastic, such as a polyethelene, nylon, vinyl or any of their formulations which will fuse and unite at a temperature over 200 F.

The assembled unit is then placed in the field IQ of an induction heating machine and the metallic ring I! is heated to a temperature necessary to fuse and bond the adjacent materials.

By this method, the parts are locked inplace by the ring H which holds the disk I 4 against the shoulder I3 until the bonding operation is completed.

No claim is made to the uniting of objects by welding or bringing them together at a point of fusion for this has long been practiced.

I claim:

1. A container of elastic plastic material having a counterborecl end, said counterbored end having an internal ring groove, a disk occupying said counterbored end having an external peripheral ring groove registering with said intern-a1 groove, and a metallic ring occupying both of said grooves.

2. A container of elastic plastic material having a counterbored end, the outer portion of The counter-bore I2 is provided with an in- I which is flared outwardly, a plastic disk occupying said counterbore, and a metal ring disposed between said disk and counterbore extending into complementary grooves in both of said members, said ring serving as a temporary lock between the members.

JAMES CLIFTON DE SHAZOR, J R.

References Cited in the file of this patent UNITED STATES PATENTS Great Britain Aug. 3, 1944 

